Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1996E 350 VAN V8-460 7.5LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMIGNITION CONTROL MODULEDESCRIPTION AND OPERATION
1996 Ford E 350 Van V8-460 7.5L
Ignition Control Module: Description and Operation
1996 Ford E 350 Van V8-460 7.5LSECTION Description and Operation
Purpose
The Ignition Control Module (ICM) receives spark signals from the powertrain control module (PCM) and serves as an electric switch for the coil primary circuit.
Operation
Based on input signals, the powertrain control module will signal the ignition module to make corrections to the basic ignition timing. The computed ignition timing is determined by the engine speed, intake manifold vacuum (calculated by the intake air amount and engine speed) and EGR flow rate.
The Ignition Control Module (ICM) receives spark signals from the powertrain control module (PCM) and serves as an electric switch for the coil primary circuit.
Operation
Based on input signals, the powertrain control module will signal the ignition module to make corrections to the basic ignition timing. The computed ignition timing is determined by the engine speed, intake manifold vacuum (calculated by the intake air amount and engine speed) and EGR flow rate.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.